Oh yeah, that domain could be an issue if changing it means having to update/replace the firmware on old embedded devices. I'll put it back for now for you as an alias so you have both. It could take up to 2 hours to work, and will show the same content as the .us domain.
In the meantime, please update your service/documentation so that new users and updates going forward will access your service through the .us domain instead. There will eventually be a point where we eliminate the remaining .org domains from user accounts.